Apache mpm_event_module

Rocky Linux General
1

Hello everyone,

I recently switched from Centos 7 to Rocky Linux 9.1. I’m trying to understand how best to optimize Apache (currently installed version is 2.4.53). I saw that the mpm_event_module module is active, which as far as I understand should allow me to configure some parameters such as:

ThreadsPerChild
ServerLimit
AsyncRequestWorkerFactor
MaxRequestWorkers
idle_workers
max_connections

However, I can’t find the config file with the default values (which I’ve seen exist on other distributions). Can anyone tell me if there is a specific configuration file that I can edit? If I don’t change anything, what are the current defaults Apache is using on Rocky Linux 9.1?

I’m sorry but I’ve just started gaining experience with this version of Apache.

Thank you

2

Hi, the file you are looking for is /etc/httpd/conf.modules.d/00-mpm.conf and I added to this:

<IfModule mpm_event_module>
	ServerLimit		16
	StartServers		8
	MinSpareThreads		25
	MaxSpareThreads		75
	ThreadLimit		64
	ThreadsPerChild		25
	MaxRequestWorkers	400
	MaxConnectionsPerChild  3000
</IfModule>

for example. I put this under the line that loads the module for mpm_event. Obviously you can set what appropriate options you need than my example. You can verify config changes before restarting Apache with:

apachectl configtest
3

Thank you, do you know the default values of all that settings?

4

From the official documentation it would appear that the defaults values are:

<IfModule mpm_event_module>
    StartServers             3
    MinSpareThreads          75
    MaxSpareThreads          250
    ThreadLimit              64
    ThreadsPerChild          25
    MaxRequestWorkers        400
    MaxConnectionsPerChild   0
</IfModule>